<template>
  <header class="head-nav">
    <el-row>
      <el-col :span="6" class="logo-container">
        <img src="../assets/logo.png" alt="logo" class="logo" />
        <span class="title">水产品大数据后台管理系统</span>
      </el-col>
      <el-col :span="6" class="user">
        <div class="userinfo">
          <img :src="user.avatar" alt class="avatar" />
          <div class="welcome">
            <span class="name commename">欢迎</span>
            <div class="name avatarname">{{user.name}}</div>
          </div>
          <span class="username">
            <el-dropdown trigger="click" @command="handleCommand">
              <span class="el-dropdown-link">
                <i class="el-icon-arrow-down el-icon--right"></i>
              </span>
              <el-dropdown-menu slot="dropdown">
                <el-dropdown-item command="info">个人信息</el-dropdown-item>
                <el-dropdown-item command="logout">退出</el-dropdown-item>
              </el-dropdown-menu>
            </el-dropdown>
          </span>
        </div>
      </el-col>
    </el-row>
  </header>
</template>

<script type="text/ecmascript-6">
export default {
  name: "headNav",
  data() {
    return {
      user: JSON.parse(localStorage.token_data)
    };
  },
  mounted() {
    console.log();
  },
  methods: {
      handleCommand(cmdItem){
          switch (cmdItem) {
              case 'info':
                this.goUserInfo()                      
                  break;
          
              case 'logout':
                  this.logout()
                  break;
          }
      },
      goUserInfo(){
          this.$router.push('/infoShow')
          
      },
      logout(){
          localStorage.removeItem('token')
          localStorage.removeItem('token_data')
          this.$router.replace('/login')
          this.$message({
              message: '已退出登录',
              type: "success"
            });
      }
  },
  components: {}
};
</script>

<style scoped lang="scss">
.head-nav {
  width: 100%;
  height: 60px;
  min-width: 600px;
  padding: 5px;
  background: #324057;
  color: #fff;
  border-bottom: 1px solid #1f2d3d;
  
}

.logo-container {
  line-height: 60px;
  min-width: 400px;
}
.logo {
  height: 50px;
  width: 50px;
  margin-right: 5px;
  vertical-align: middle;
  display: inline-block;
}
.title {
  vertical-align: middle;
  font-size: 22px;
  font-family: "Microsoft YaHei";
  letter-spacing: 3px;
}
.user {
  line-height: 35px;
  // position: relative;
  // top:50%;
  // margin-top:-20px;
  text-align: right;
  float: right;
  padding-right: 10px;
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  vertical-align: middle;
  display: inline-block;
}
.welcome {
  display: inline-block;
  width: auto;
  vertical-align: middle;
  padding: 0 5px;
}
.name {
  line-height: 20px;
  text-align: center;
  font-size: 14px;
}
.comename {
  font-size: 12px;
}
.avatarname {
  color: #409eff;
  font-weight: bolder;
}
.username {
  cursor: pointer;
  margin-right: 5px;
}
.el-dropdown {
  color: #fff;
}
</style>
